Concrete flowerpot machine



CONCRETE FLOWERPOT MACHINE H. KERN ET AL 1 I CONCRETE FLOWERPOT MACHINE Filed Jan. so, 1925 5 shee1s-sheertf 2 KERN ET AL CONCRETE FLOWERPOT MACHINE sgpt; 29,1925.

Filed Jan. 30. 1925 3 Sheets-Shea?I .5

y UNITED STA improvements chines.

Patented Sept. 29, 1925.

trefg PATE 1,555,511@ NroFfgFilce. l

` 4Homan KERN AND JOHN n. PATTIsoN, or GERMANTOWN, oHiofff` cononn'rnrnownnro'r MACHINE.

Application filed January To all whom tmay concern: i

`Be `it knownthat HOMER KERN andy Jorim The primaryobject of our invention is to provide a rapid method of forming, packing and'finishing concrete flower pots at one operation. Y y

With the foregoing and other objects in view that will appear as the nature of our invention is better understood the same consists in the novel features of construction, combination and arrangement of parts il lustrated in the drawings and more particularly pointed out in the appended claims.

In the accompanying drawingswhich are for illustrative purposes only and are therefore not drawn to scale:

Figure 1 is a front elevation of a concrete flower pot machine embodying our improvements.

Figure 2 is an end view.

Figure 3 is a plan view.

Figure 4 is a detail longitudinal section.

Figure 5 is a horizontal section.

Figure 6 is a sectional view of the packer.

Figures 7 8 and 9 are details of various features of our invention.

Referring to the drawings for a more particular description of our invention and in which drawings like parts are designated by like reference characters throughout the several views, our machine comprises an upright frame A consisting of the upright and cross bars l and 2, respectively, and the base or platform 3. Numeral l designates the mold which is supported upon the horizontal table 5 and conforms to the outside measurements and contour of standard flower pots. It will be understood of course that any suitable `form or design of mold may be employed to manufacture corresponding flower pots. The packer 6 is carried by the lower end of the perpendicular shaft 7 mounted in bearings 8 and this shaft is provided at its upper endl with a longitudinal key-way 9 in which is slidably mounted a key 10 carried by the pulley 1l. A motor 12 is mounted on the base 3 and `with the pulley 11 by 3o, 1925; serial ne. 'asse rotary motion is transmitted fromsaid mo` torto said shaft by the following gearing. A belt 13 runs over the pulley 14 of the motor *and` over a larger pulley 15 carried by the horizontal-shaft 16 journalled in bearings 17 above the base.

is mounted on the shaft 16 and isl connected the endless belt l19 which works over the idlers 2O keyedtofthe horizontal shaft21 journalled in bearings 22 mounted on the frame A above the shaft 16. Arock shaft 23 is' journalled in bearings` 21l'in4 the frame A at a point preferably between the shafts 16 and 21 andfis provided at its forwardend with a fork25 connected by a collar 26-with theperpendicular packer shaft 7. One end of the rock shaft 23 is provided with a depending crank handle 27 which extends downwardly to within convenient reach of the operator and whereby the shaft 7 may be raised or low? ered to engage or disengage the vpacker with the mold 4. In this connection attention is called to the fact that the longitudinal keyway 9 'in shaft 7 4permits vertical movement lof the latter with Vrespect to the pulley 11"` without interfering with the rotary'` movement of said shaft. The packer comprises a central substantially cylindrical core 28 and a pair of oppositely disposed downwardly flared arcuate packing segments 29, connected with the core by the curved webs 28 and whose surfaces from a to l) are formed on the arc of a circle of greater diameter than from Z) to c. In other words, the surfaces of the packing segments from a to I) are concentric with the rim 29 and from l) to c eccentric thereto. The rim 29 is formed at the upper end of the case 28 and this case is provided with a boss-31 which projects above the aforesaid rim and is provided with a central bore 32 adapted to receive the lower end of the perpendicular shaft 7. The packer is attached to this shaft by the set screw 38 or other equivalent means. Attention is invited to the fact that the bottom of the packer is formed with a pair of arcuate oppositely disposed reversely extending grooves 34E; also, that the bottom wall of the rim is formed with an annular groove 30. i

In practice, Portland cement mixed in the proper proportions with sand and water is introduced into the mold. The packer, rotating in a counter clock-wise direction at a speed of approximately two hundred revo- A second pulley 18 lutions er minute is then lowered into the mold w en the material in the bottom of the mold is worked up towards the top and sides of the mold at the same time by virtue of the peculiar shape of the grooves 84 formed in the bottom of the packer, and that of the packing segments 29. The packer is gradually lowered into the mold until the mold,- ing operation is completed, that is to say, untila complete flower pot is molded,.and

lat the completion of this molding operation the recessed bottom edge of the rim 29 of the packer is located one-eighth of an inch below the top of the mold. The mold is provided with a false bottom '85 having one-eighth of an inch play and` when the mold is inverted on a smooth surface' and pressure applied tothe false bottom 35, the

f finished flower pot is released from the mold the finished flower pot to be released on the pallet in a more moistened condition than by any method now employed.

From the foregoing description taken in connection with the drawings, it. is thought that the construction, operation and advantages of our invention will be readily understood without requiring a more extended eX- planation.

Having described our invention, what we claim as new and desire to secure by Letters Patent, is t l. In a device of the character specified, a mold anda packer cooperating therewith in forming flower pots, said packer comprising a central core and a pair of oppositely disposed downwardly flared arcuate packing segments, the bottom ,of the packer formed with a 'pair of arcuate oppositely disposed reversely extending grooves and the top of the packer with a circular rim formed in its bottom wall with an annular groove or depression, substantially as and for the purpose specified. j v

2. In a device of the character specified, a mold conforming to the general outside shape of a flower pot, a packer comprising a cylindrical downwardly flared body portion formed in its bottom with a .pair of arcuate oppositely disposed reversely extending grooves, a circular flange formed at the top Vof the body portionof the packer and formed in its bottom wall with anfannular groove and a false bottom for the mold having vertical play, the bottom wall of the packer flange fitting below the upper edge of the mold at a distance corresponding to the vertical play of the false bottom at the completion of the molding operation.

In testimony whereof they aflix their signatures.

HOMER KERN.

JOHN R. PATTISON. 

